640064400

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{419}}^1$

素因数の和:526

約数の個数: 240

約数和(自身を含む): 2195692800

約数和(自身を除く): 1555628400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 25, 30, 38, 40, 48, 50, 57, 60, 67, 75, 76, 80, 95, 100, 114, 120, 134, 150, 152, 190, 200, 201, 228, 240, 268, 285, 300, 304, 335, 380, 400, 402, 419, 456, 475, 536, 570, 600, 670, 760, 804, 838, 912, 950, 1005, 1072, 1140, 1200, 1257, 1273, 1340, 1425, 1520, 1608, 1675, 1676, 1900, 2010, 2095, 2280, 2514, 2546, 2680, 2850, 3216, 3350, 3352, 3800, 3819, 4020, 4190, 4560, 5025, 5028, 5092, 5360, 5700, 6285, 6365, 6700, 6704, 7600, 7638, 7961, 8040, 8380, 10050, 10056, 10184, 10475, 11400, 12570, 12730, 13400, 15276, 15922, 16080, 16760, 19095, 20100, 20112, 20368, 20950, 22800, 23883, 25140, 25460, 26800, 28073, 30552, 31425, 31825, 31844, 33520, 38190, 39805, 40200, 41900, 47766, 50280, 50920, 56146, 61104, 62850, 63650, 63688, 76380, 79610, 80400, 83800, 84219, 95475, 95532, 100560, 101840, 112292, 119415, 125700, 127300, 127376, 140365, 152760, 159220, 167600, 168438, 190950, 191064, 199025, 224584, 238830, 251400, 254600, 280730, 305520, 318440, 336876, 381900, 382128, 398050, 421095, 449168, 477660, 502800, 509200, 533387, 561460, 597075, 636880, 673752, 701825, 763800, 796100, 842190, 955320, 1066774, 1122920, 1194150, 1347504, 1403650, 1527600, 1592200, 1600161, 1684380, 1910640, 2105475, 2133548, 2245840, 2388300, 2666935, 2807300, 3184400, 3200322, 3368760, 4210950, 4267096, 4776600, 5333870, 5614600, 6400644, 6737520, 8000805, 8421900, 8534192, 9553200, 10667740, 11229200, 12801288, 13334675, 16001610, 16843800, 21335480, 25602576, 26669350, 32003220, 33687600, 40004025, 42670960, 53338700, 64006440, 80008050, 106677400, 128012880, 160016100, 213354800, 320032200, 640064400]

約数ペア:

[(1, 640064400), (2, 320032200), (3, 213354800), (4, 160016100), (5, 128012880), (6, 106677400), (8, 80008050), (10, 64006440), (12, 53338700), (15, 42670960), (16, 40004025), (19, 33687600), (20, 32003220), (24, 26669350), (25, 25602576), (30, 21335480), (38, 16843800), (40, 16001610), (48, 13334675), (50, 12801288), (57, 11229200), (60, 10667740), (67, 9553200), (75, 8534192), (76, 8421900), (80, 8000805), (95, 6737520), (100, 6400644), (114, 5614600), (120, 5333870), (134, 4776600), (150, 4267096), (152, 4210950), (190, 3368760), (200, 3200322), (201, 3184400), (228, 2807300), (240, 2666935), (268, 2388300), (285, 2245840), (300, 2133548), (304, 2105475), (335, 1910640), (380, 1684380), (400, 1600161), (402, 1592200), (419, 1527600), (456, 1403650), (475, 1347504), (536, 1194150), (570, 1122920), (600, 1066774), (670, 955320), (760, 842190), (804, 796100), (838, 763800), (912, 701825), (950, 673752), (1005, 636880), (1072, 597075), (1140, 561460), (1200, 533387), (1257, 509200), (1273, 502800), (1340, 477660), (1425, 449168), (1520, 421095), (1608, 398050), (1675, 382128), (1676, 381900), (1900, 336876), (2010, 318440), (2095, 305520), (2280, 280730), (2514, 254600), (2546, 251400), (2680, 238830), (2850, 224584), (3216, 199025), (3350, 191064), (3352, 190950), (3800, 168438), (3819, 167600), (4020, 159220), (4190, 152760), (4560, 140365), (5025, 127376), (5028, 127300), (5092, 125700), (5360, 119415), (5700, 112292), (6285, 101840), (6365, 100560), (6700, 95532), (6704, 95475), (7600, 84219), (7638, 83800), (7961, 80400), (8040, 79610), (8380, 76380), (10050, 63688), (10056, 63650), (10184, 62850), (10475, 61104), (11400, 56146), (12570, 50920), (12730, 50280), (13400, 47766), (15276, 41900), (15922, 40200), (16080, 39805), (16760, 38190), (19095, 33520), (20100, 31844), (20112, 31825), (20368, 31425), (20950, 30552), (22800, 28073), (23883, 26800), (25140, 25460)]